Divided ball and roller bearing.



=1. H. K. KIRNER.

DIVIDED BALL AND ROLLER BEARING.

APPLICATION FILED OCT-26,191].

1, H5399, Patented Jur 13, 1915.

* IIIIIIW] I J a: WNW if 10 1% 1M.-

wu w JOSEF HERMANN KARL KILRNER, or .sTUTTeART, GERMANY, assionoatiio uoitma GOMPAGNIE e. M. B. H., or CANNSTA'lT-STUTTGART, GERMANY, aooaronnrrou or GERMANY.

DIVIDED BALL AND. ROLLER B A I G,

' Specification of Letters Patent. I

Patente a Jul 13,1915,

Application filed 0ctoher26, 1911. Serial No. 656,830.

To all whom it may concern:

Germany, and a resident of Stuttgart, in the Kingdom of Vurttemberg, in the Empire of Germany, have invented certain new and useful Improvements in Divided Ball and Roller Bearings, of which the following is a specification.

This invention has for its object to provide an improved means of connecting together parts of the divided ball and roller v for the rollers. The meeting' edges of these semi-sections have interlocking connections which admitof a limited lateral displacement of the 's'ections,isuch interlocking conbearings.

Hitherto the use of divided ball or roller bearings has had the disadvantage that when the two halves of an annular race for, such bearings were connected, a PI'OJGClZlOIl or irregularity almost always resulted at the joint, interrupting the running surface; which had a highly deleterious action on the race 'by reason of: the high surface pressure peculiar to such bearlngs. I The forma tion of such an interruption of the race cannot be avoided by the finishing of the race in the ordinary way, as there is generally no security that when the partsare taken apart the separate parts on being put to- .gether will come into exactly the same positions relative to one another as before, be cause a certain displacement of the parts is always possible. The efforts previously made had for their object to keep as small as possible this disadvantage which was regarded as unavoidable and to form the joint faces in such a way, as for instance, to provlde them with holding plns and so forth,

arranged that it should only be possible to'- put them together when the parts were eachtime in exactly the samepositionsrrelative' to one another. This invention departs from these efforts, and on the contrary al lows for the possibility'of displacementof the separate parts, whereby articles maybe produced on a practical manufacturing scale.

during the putting together of the half races and is as large as is possible. Consequently in any subsequent putting together the parts relative to one another must always exactly assume the same positions, if only care be taken that the possible displacement be each time carried as far as possible.

Figure 1 of theaccompanying drawings shows an end elevation of a sectional roller The possible displacement is, however, produced after being put together or bearing embodying one form. ofthis invention,'1n which said bearing is composed of two similar semi-sections. Fig.2 represents atop plan view thereof, parts-beingbroken out to facilitate illustration, a a 1 1 The same reference numbers indicate corresponding parts in bothfigu'res;

nections-being sogarrang'ed that when" the sections. are atone' 'extremity of lateral displacement, the race face's'are exactly in register and form a continuous smooth bearing.

In the illustrated embodiment of thi s'interlocking connection onejof the sections'aslO 1s provlded on its meeting face. 12 with a hole or. recess 13 andon its other diametri-- ,cally opposite meeting face 122 with a projection or rib li t'q embed dedjin said "face.

Thev other, section; as 20 is provided on its meeting faoe,22 ,with a projection or rib-23 I embedded insaidjfacef and on its meeting fable112 with a hole or-recessllSQ When-the sections 10 and 20 are placed togethen'the pro ectionsz23 and 123 extend into theslots ormrecesses' v13 ,1 and 113 respectively. v The projections, orribs 23 or- 123 are smaller than the recesses 13 andill3 so as to permit nlore or less lateral play between the sections. Nhenthe outer face 14 of the recess 13 abut s against the outer face 21 of the rib-23 and-the outer face 114; of the "recess 1-13 abuts against the outer face 124" of the rib 123, the race faces 11 and 21 of the two semi-sections are exactly in register.

. -Means are provided for locking the sections in their normal adjustment. Any suitable means maybe employed for this purpose. The means shown consist of an inclined screw bolt 30 which is passed loosely through a hole 17 in thelip 16 of the section 10 and which takes into an inclined threaded socket 25 in the section 20, said bolt passbolt 130 passes loosely ,through the inclined hole 117 in the lip 116-'of the section 20 and takes into an inclined threaded socket 125 in .thesection' 10, said bolt passing at an incline across the joint between the faces 112 and 122 of said sections and having its head resting on the face of the lip 116 m the angular recess 118 formed in the periphery of the section 10.

In the use of this invention, the sections being apart, as indicated in dotted lines in Fig.1, the section 10 is brought down into contact with section 20, the contact faces '12 and 122 of the section 10 being in touch with -the contact faces 22 and 112 of the section and the projection 23 of the section 20 entering the recess 13 of the section 10 and the projection 123 of the section 10 entering the recess 113 of the sec;

'tion 20. The parts are then probably in i such relative position as to cause the race faces 11 and 21 to break-joint. Then the section 10 is pushed toward the right until the outer face 14 of the recess 13 abuts. against the outer face 2% of the projection 23;

and the outer face 124 of the projection. 123

abuts against the outer face 11+l of the slot 113. When these slots and projections a brought to a stopby such contact, the rela i tion of the parts is such that there is an absolute continuity of the race faces 11 and 21 of the two sections. Then the lockingbolts and 130' are screwed into position and the parts are tightly pressed-and locked to- -gether as indicated in full lines in Fig. 1.

In the making of these roller bearings, the race faces 11' and 21 of'the respective sec,- tions are ground while the iarts are thus locked together and ever a ter when this adjustment is effected between the parts,

' the. race faces will form a continuous cir- Copies of this patent may be obtained for pins, etc., may be made much more simply when this invention is employed and therefore a greater exactness in the connection obtained than hitherto. At the same time a feature is encountered to which hitherto sufficient attention has not been paid. The projection or irregularity in the race is caused not only in consequence of unavoidable inexactitudes in making the hearing, but also in the case of exactly finishedraces, in consequence of the pressure of the balls or rollers. When a ball or roller is traveling over the joint, the ends of the half are depressed in similar manner to that which has been observed at the joints of railway rails. This depression at the joint is also rendered impossible according to this invention by all possible movement being compulsorily obtained before the races are finished. The invention consists therefore in finishing the' oints of the running surfaces before assembling them for use, in such a manner as to take up" any relative movement due to pressure exerted thereon during use, whereby "asmooth joint during use is ptained.

IHaving thus described my invention, I

claim as new and desire to secure by Letters "Patent:

A sectional-roller bearing race composed of race sections having an interlocking connection on'their meeting faces, said connection admitting of a limited lateral displacement of said sections, and consisting of a stop on one face and a recess on the other face larger than the stop, the race faces being in register when the sections are at one extremity of their lateral adjustment, and means for holding the sections in such adjustment.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

JOSEF HERMANN KARL KIRNER Witnesses Max Scrrwnmnnr, CARL RUPP.

five cents each, by addressing the Commissioner of Patents,

Washington, .D. 0. 

